Metropolitan Water Reclamation District
13 Stephen St, Lemont, IL 60439 · Cook County · Publicly Owned Treatment Works
- Average flow
- 2.85 MGD
- Design flow
- —
- NPDES permit
- ILL028070
- Effective
- Permit expires
- December 2030
- Population served
- 17,338
- CWNS 2022
Metropolitan Water Reclamation District is a publicly owned wastewater treatment works in Lemont, Cook County, Illinois treating an average of 2.85 million gallons per day, serving about 17,338 residents. It discharges under NPDES permit ILL028070 (effective), which expires in December 2030, with 2 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in January 2014.
Treatment technology
One treatment structure or unit process identified at Metropolitan Water Reclamation District.
Available with a free Klarifi account
See the full treatment train at Metropolitan Water Reclamation District: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Metropolitan Water Reclamation District in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $675,000
- all cases
- Compliance actions
- $1,770M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jan 2014
METROPOLITAN WATER RECLAMATION DISTRICT
Judicial case · CWA, NPDES Discharge without a Permit · Final Order Entered · Penalty $675,000 · Compliance actions $1,770M · The case also names 2 other plants, and its amounts cover all of them
EPA's description of the case:
“MWRDGC owns and operates 7 WWTPs in the Chicago Area”
Source: EPA ECHO, civil enforcement case 05-2001-0642.
Full case history with a free Klarifi account
Every action against Metropolitan Water Reclamation District with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
4 verified contacts for Metropolitan Water Reclamation District, with validated emails and direct phone numbers.
Unlock 4 verified contacts (1 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Metropolitan Water Reclamation District, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Romeoville · 4 mi away
6.43 MGD
Bolingbrook · 5 mi away
1.57 MGD
Woodridge · 6 mi away
8.92 MGD
Burr Ridge · 7 mi away
11.38 MGD
Lockport · 8 mi away
—
Downers Grove · 9 mi away
10.66 MGD
Bolingbrook · 9 mi away
3.67 MGD
Naperville · 9 mi away
20.15 MGD
Metropolitan Water Reclamation District: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated August 11, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms